Current Transformers and Potential Transformers

 

 

 

 

 

 

 

 

 

When current transformers are operated with an open circuit, extremely high voltages can be generated which can result in damage to equipment and personnel. Before removing a load such as a meter or relay, the CT should be short circuited using a shorting block as shown to the left.

Southern Transformer can provide shorting blocks and current transformers for many applications.